CN106298853B - Electroluminescence display panel - Google Patents
Electroluminescence display panel Download PDFInfo
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- CN106298853B CN106298853B CN201610703856.4A CN201610703856A CN106298853B CN 106298853 B CN106298853 B CN 106298853B CN 201610703856 A CN201610703856 A CN 201610703856A CN 106298853 B CN106298853 B CN 106298853B
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/121—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/122—Pixel-defining structures or layers, e.g. banks
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The invention discloses electroluminescence display panels, the electroluminescence display panel includes multiple pixel units, each pixel unit includes multiple primary color sub-pixels, wherein the primary color sub-pixels of each pixel unit include at least two blue subpixels, and is one another in series between at least two blue subpixels.By the above-mentioned means, the present invention can reduce blue subpixels by reducing the electric current of blue subpixels burn phenomenon, to extend the service life of electroluminescence display panel.
Description
Technical field
The present invention relates to field of display technology, more particularly to electroluminescence display panel.
Background technique
Electroluminescence display panel has spontaneous light characteristic, compared to liquid crystal display, has quick response, more frivolous,
The advantages that wide viewing angle, low-power consumption, and easily prepared flexible device, are increasingly paid close attention to by market.
Current electroluminescence display panel plate includes multiple pixel units, and each pixel unit includes by the luminous material of difference
Expect the sub-pixel of red (R) that is formed, green (G), blue (B) three kinds of primary colours.Electroluminescent display realizes the principle that colorization is shown
Are as follows: since the size of current by electroluminescent material is different, then the brightness of luminescent material sending light is also different, can divide accordingly
Not Kong Zhi the size of current that passes through of tri- sub-pixels of R, G, B, to realize that tri- sub-pixels of R, G, B issue the light of different brightness,
Again since each pixel unit is very small, visually the light that tri- sub-pixels of R, G, B issue will be mixed to form each pixel
Unit color to display.
Main problem using the display panel of the design is that the material lifetime of RGB light emitting pixel differs greatly, especially
Be blue light service life it is shorter, cause display that colour cast occurs after a period of use, influence display effect and panel service life.
Summary of the invention
The invention mainly solves the technical problem of providing electroluminescence display panels, can be by reducing blue subpixels
Electric current burn phenomenon reduce blue subpixels, to extend the service life of electroluminescence display panel.
In order to solve the above technical problems, one technical scheme adopted by the invention is that: a kind of electroluminance display face is provided
Plate, which is characterized in that electroluminescence display panel includes multiple pixel units, and each pixel unit includes multiple primary colours pictures
Element, wherein the primary color sub-pixels of each pixel unit include at least two blue subpixels, and at least two blue subpixels it
Between be one another in series.
Wherein, in each pixel unit, the gross area of at least two blue subpixels is greater than remaining any one face
The gross area of the primary color sub-pixels of color.
Wherein, the primary color sub-pixels of each pixel unit include red sub-pixel and green sub-pixels, wherein at each
In pixel unit, the gross area of at least two blue subpixels is greater than the gross area of red sub-pixel and is greater than green sub-pixels
The gross area.
Wherein, in each pixel unit, the gross area of red sub-pixel is equal to the gross area of green sub-pixels.
Wherein, in each pixel unit, the gross area of red sub-pixel is more than or less than total face of green sub-pixels
Product.
Wherein, in each pixel unit, at least two blue subpixels are respectively included being stacked on one another the anode of setting
Layer, electroluminescence layer and cathode layer, wherein the anode layer of a blue subpixels and the cathode layer of another blue subpixels are electrically connected
It connects.
Wherein, a blue subpixels and remaining color in each pixel unit, at least two blue subpixels
Primary color sub-pixels be arranged along first direction interval, and in the primary color sub-pixels of another blue subpixels and remaining color at least
One edge is arranged perpendicular to the second direction interval of first direction.
Wherein, the length direction of a blue subpixels is arranged in a second direction, the length direction edge of another blue subpixels
First direction setting.
Wherein, electroluminescence display panel is OLED display panel or QLED display panel.
In order to solve the above technical problems, another technical solution used in the present invention is: providing a kind of electroluminance display
Panel, which is characterized in that electroluminescence display panel includes multiple pixel units, and each pixel unit includes multiple primary colours pictures
Element, wherein the primary color sub-pixels of each pixel unit include at least two same sub-pixels, at least two the same as between sub-pixels
Be one another in series, and under identical driving current, with sub-pixels luminescent lifetime be less than remaining color primary color sub-pixels hair
The light service life.
The beneficial effects of the present invention are: being in contrast to the prior art, electroluminescence display panel of the invention includes
Multiple pixel units, each pixel unit includes multiple primary color sub-pixels, wherein the primary color sub-pixels of each pixel unit include
At least two blue subpixels, and be one another in series between at least two blue subpixels.By the above-mentioned means, due to the sub- picture of blue
The quantity of element increases, and the gross area becomes larger, and can reduce the driving current of blue subpixels, phenomenon is burnt in reduction, to extend electricity
The service life of photoluminescence display panel.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of electroluminescence display panel first embodiment of the present invention；
Fig. 2 is two blue subpixels of a pixel unit in electroluminescence display panel first embodiment of the present invention
Interlayer structure connection schematic diagram；
Fig. 3 is two blue subpixels of a pixel unit in electroluminescence display panel first embodiment of the present invention
Circuit connection diagram；
Fig. 4 is the structural schematic diagram of electroluminescence display panel first embodiment first embodiment of the present invention；
Fig. 5 is the structural schematic diagram of electroluminescence display panel first embodiment second embodiment of the present invention；
Fig. 6 is the structural schematic diagram of electroluminescence display panel first embodiment 3rd embodiment of the present invention；
Fig. 7 is the structural schematic diagram of electroluminescence display panel second embodiment of the present invention.
Specific embodiment
Refering to fig. 1, Fig. 1 is the structural schematic diagram of electroluminescence display panel first embodiment of the present invention.Wherein, Fig. 1
In dotted line frame in indicate a pixel unit enlarged structure schematic diagram.
The electroluminescence display panel includes multiple pixel units 10, and each pixel unit 10 includes multiple primary colours pictures
Element, the first primary color sub-pixels 11, the second primary color sub-pixels 12, third primary color sub-pixels 13 and the four primary of example as shown in figure 1
Sub-pixel 14.Wherein the primary color sub-pixels of each pixel unit 10 include at least two blue subpixels, and at least two is blue
It is one another in series between sub-pixel.Example the first primary color sub-pixels 11 as shown in figure 1 and the second primary color sub-pixels 12 are two blue
Sub-pixel, and the first primary color sub-pixels 11 and the series connection of the second primary color sub-pixels 12.
It should be understood that 12 series relationship of the first primary color sub-pixels 11 and the second primary color sub-pixels is illustrated only in Fig. 1, the
One primary color sub-pixels 11, the second primary color sub-pixels 12 and other primary color sub-pixels and the connection relationship of external circuit are not made here
Limitation.
Optionally, in other embodiments, a pixel unit can also include three, four or more blues
Sub-pixel.
Optionally, in each pixel unit, at least two blue subpixels are respectively included being stacked on one another the sun of setting
Pole layer, electroluminescence layer and cathode layer, wherein the cathode layer of the anode layer of a blue subpixels and another blue subpixels electricity
Connection.
Wherein, electroluminescence display panel can be OLED (Organic Light Emitting Diode, Organic Light-Emitting
Diode) display panel or QLED (light emitting diode with quantum dots, Quantum-Dots Light-Emitting Diode) display
Panel.
Referring particularly to two that Fig. 2, Fig. 2 are a pixel units in electroluminescence display panel first embodiment of the present invention
The interlayer structure connection schematic diagram of a blue subpixels, the first primary color sub-pixels 11 include be stacked on one another setting anode layer 111,
Electroluminescence layer 112 and cathode layer 113；Anode layer 121, electroluminescent hair of second primary color sub-pixels 12 including the setting that is stacked on one another
Photosphere 122 and cathode layer 123.Wherein, in one embodiment, the anode layer 111 and the second base of the first primary color sub-pixels 11
The cathode layer 123 of sub-pixels 12 is electrically connected；In another embodiment, it is also possible to the cathode layer of the first primary color sub-pixels 11
113 and second primary color sub-pixels 12 anode layer 121 be electrically connected.
Wherein, anode layer and cathode layer are generally metal layer, and in the selection of anode material, material itself necessarily has height
Work function (High work function) and light-transmissive, thus with the high work function of 4.5eV-5.3eV, property it is stable and
The ITO nesa coating of light transmission, is just widely used in anode.In cathode portion, in order to increase the luminous efficiency of element, electronics
Injection with electric hole usually requires the metals such as Ag, Al, Ca, In, Li and Mg of low work function (Low work function), or
The composition metal of low work function makes cathode (such as: Mg-Ag magnesium silver).
Wherein, in OLED display panel, electroluminescence layer is organic light emitting diode, generally comprises electron transfer layer
And hole transmission layer, so the electron transfer layer and hole transmission layer of organic light emitting diode must select different organic materials
Material.Most often being used to the material of production electron transfer layer at present, must to be film-made stability high, thermostabilization and electron-transporting good, and one
As generally use fluorescent dye compound.Such as Alq, Znq, Gaq, Bebq, Balq, DPVBi, ZnSPB, PBD, OXD, BBOT.
And the material of hole transmission layer belongs to a kind of aromatic amine fluorescent compounds, such as TPD, TDATA organic material.
Wherein, in QLED display panel, electroluminescence layer include be stacked on one another setting p-type quantum spot semiconductor, amount
Carbon single layer and N-type quantum spot semiconductor, typically, quantum dot are composed of zinc, cadmium, selenium and sulphur atom.
It is simultaneously two of a pixel unit in electroluminescence display panel first embodiment of the present invention refering to Fig. 3, Fig. 3
The circuit connection diagram of a blue subpixels, two diodes therein illustrate the series connection side of two blue subpixels
The sequence of formula, two blue subpixels can exchange.
Optionally, in a pixel unit, other color sub-pixels in addition to blue subpixels are also typically included, for example,
In the present embodiment, it other than the second primary color sub-pixels 12 of the first primary color sub-pixels 11 of blue and blue, can also wrap
Include the four primary sub-pixel 14 of red third primary color sub-pixels 13 and green.
It should be understood that quantity, the size, arrangement side of multiple primary color sub-pixels in a pixel unit 10 in Fig. 1
Formula can be arbitrarily arranged, and the size of especially two blue sub-pixels can be different from the big of red and green sub-pixel
It is small.
Wherein, in each pixel unit, the gross area of at least two blue subpixels is greater than remaining any one face
The gross area of the primary color sub-pixels of color.
Optionally, if the primary color sub-pixels of each pixel unit include red sub-pixel and green sub-pixels, wherein every
In one pixel unit, the gross area of at least two blue subpixels is greater than the gross area of red sub-pixel and is greater than the sub- picture of green
The gross area of element.
Optionally, the gross area of red sub-pixel therein and the gross area of green sub-pixels can be equal, red sub- picture
The gross area of element can also be more than or less than the gross area of green sub-pixels.
Wherein, in each pixel unit, the arrangement mode of at least two blue subpixels can be identical or different
, direction can also be arbitrarily arranged.
Optionally, a blue subpixels and remaining face in each pixel unit, at least two blue subpixels
The primary color sub-pixels of color are arranged along first direction interval, and in the primary color sub-pixels of another blue subpixels and remaining color extremely
A few edge is arranged perpendicular to the second direction interval of first direction.
Optionally, the length direction of a blue subpixels is arranged in a second direction, the length direction of another blue subpixels
It is arranged along first direction.
Several embodiments will be with two indigo plant (B) sub-pixels, red (R) sub-pixels and green (G) dice below
For pixel, the size and arrangement mode of multiple primary color sub-pixels are introduced.
It is the structural representation of electroluminescence display panel first embodiment first embodiment of the present invention refering to Fig. 4, Fig. 4
Figure.
Wherein, the length direction of a blue subpixels is arranged in a second direction, the length direction edge of another blue subpixels
First direction setting, also, two blue subpixels are connected in series.
Optionally, remaining sub-pixel can be arranged along first direction or second direction, be not construed as limiting here.
It is the structural representation of electroluminescence display panel first embodiment second embodiment of the present invention refering to Fig. 5, Fig. 5
Figure.
Wherein, a blue subpixels and remaining color sub-pixels (R and G) are arranged along first direction interval, another blue
Sub-pixel and red sub-pixel are arranged along the second direction interval perpendicular to first direction, also, two blue subpixels series connection
Connection.
It is the structural representation of electroluminescence display panel first embodiment 3rd embodiment of the present invention refering to Fig. 6, Fig. 6
Figure.
Wherein, a blue subpixels and remaining color sub-pixels (G and R) are arranged along first direction interval, another blue
Sub-pixel and green sub-pixels are arranged along the second direction interval perpendicular to first direction, also, two blue subpixels series connection
Connection.
It should be understood that in the above three embodiments, the area of each blue subpixels can be less than red sub- picture
The area of element or green sub-pixels, but the gross area of at least two blue subpixels should be greater than red sub-pixel or green
The area of any one of pixel.
In other embodiments, the quantity of the primary color sub-pixels of a pixel unit can be not limited to 4, for example,
It can be red, green, blue, green four primary, wherein the number of blue subpixels is at least 2, wherein the sub- picture of at least two blues
Element series connection；Further for example, can be red, green, blue, Huang, green five primary colours, wherein the number of blue subpixels is at least 2, wherein
At least two blue subpixels series connection.
It should be understood that three above embodiment is only for example the introduction of the arrangement mode of multiple sub-pixels, and unlimited
Embodiments of the present invention processed, a pixel unit includes at least two blue sub-pixels, in protection scope of the present invention
Within.
It is different from the prior art, the electroluminescence display panel of present embodiment includes multiple pixel units, each pixel
Unit includes multiple primary color sub-pixels, wherein the primary color sub-pixels of each pixel unit include at least two blue subpixels, and
It is one another in series between at least two blue subpixels.By the above-mentioned means, the quantity due to blue subpixels increases, the gross area becomes
Greatly, it can reduce the driving current of blue subpixels, phenomenon is burnt in reduction, to extend the use longevity of electroluminescence display panel
Life.
It is the structural schematic diagram of electroluminescence display panel second embodiment of the present invention refering to Fig. 7, Fig. 7.
The electroluminescence display panel includes multiple pixel units 70, and each pixel unit 70 includes multiple primary color sub-pixels
(such as 71,72,73,74 in Fig. 7), wherein the primary color sub-pixels of each pixel unit 70 include at least two same sub-pixels
(such as 71 in Fig. 7 and 72), at least two are one another in series between sub-pixels, and under identical driving current, same to dice
The luminescent lifetime of pixel is less than the luminescent lifetime of the primary color sub-pixels of remaining color.
It should be understood that present embodiment is mainly the quantity of increase service life shorter sub-pixel, and connected, thus
Its calcination phenomenon can be reduced, by reducing its electric current to extend its service life.
Specifically, by taking R, G, B three primary color sub-pixels as an example:
It, can be in a pixel if the service life of R sub-pixel is less than G sub-pixel and B sub-pixel under identical driving current
At least two concatenated R sub-pixels are set in unit, by reducing its driving current, the service life of Lai Yanchang R sub-pixel.
It, can be in a pixel if the service life of G sub-pixel is less than R sub-pixel and B sub-pixel under identical driving current
At least two concatenated G sub-pixels are set in unit, by reducing its driving current, the service life of Lai Yanchang G sub-pixel.
It, can be in a pixel if the service life of B sub-pixel is less than R sub-pixel and G sub-pixel under identical driving current
At least two concatenated B sub-pixels are set in unit, by reducing its driving current, the service life of Lai Yanchang B sub-pixel.
It should be understood that in the present embodiment, the size and arrangement mode of multiple sub-pixels can be with reference to above-mentioned the
Multiple embodiments in one embodiment, which is not described herein again.
It is different from the prior art, the electroluminescence display panel of present embodiment includes multiple pixel units, each pixel
Unit includes multiple primary color sub-pixels, wherein the primary color sub-pixels of each pixel unit include at least two same sub-pixels, until
Few two are one another in series between sub-pixels, and under identical driving current, and the luminescent lifetime with sub-pixels is less than remaining
The luminescent lifetime of the primary color sub-pixels of color.By the above-mentioned means, can by increasing the quantity of service life shorter sub-pixel, with
Reduce its electric current, to extend its service life, to extend the service life of electroluminescence display panel.
Mode the above is only the implementation of the present invention is not intended to limit the scope of the invention, all to utilize this
Equivalent structure or equivalent flow shift made by description of the invention and accompanying drawing content, it is relevant to be applied directly or indirectly in other
Technical field is included within the scope of the present invention.
Claims (9)
1. a kind of electroluminescence display panel, which is characterized in that the electroluminescence display panel includes multiple pixel units, often
One pixel unit includes multiple primary color sub-pixels, wherein the primary color sub-pixels of each pixel unit include at least
Two blue subpixels, and be one another in series between at least two blue subpixels；
The blue subpixels and remaining face in each described pixel unit, at least two blue subpixels
The primary color sub-pixels of color are arranged along first direction interval, and in the primary color sub-pixels of another blue subpixels and remaining color
At least one along perpendicular to the first direction second direction interval be arranged.
2. electroluminescence display panel according to claim 1, which is characterized in that in each described pixel unit,
The gross area of at least two blue subpixels is greater than the gross area of the primary color sub-pixels of remaining any one color.
3. electroluminescence display panel according to claim 2, which is characterized in that the base of each pixel unit
Sub-pixels include red sub-pixel and green sub-pixels, wherein described at least two is blue in each described pixel unit
The gross area of sub-pixels is greater than the gross area of the red sub-pixel and is greater than the gross area of the green sub-pixels.
4. electroluminescence display panel according to claim 3, which is characterized in that in each described pixel unit,
The gross area of the red sub-pixel is equal to the gross area of the green sub-pixels.
5. electroluminescence display panel according to claim 3, which is characterized in that in each described pixel unit,
The gross area of the red sub-pixel is more than or less than the gross area of the green sub-pixels.
6. electroluminescence display panel according to claim 1, which is characterized in that in each described pixel unit,
At least two blue subpixels respectively include being stacked on one another anode layer, electroluminescence layer and the cathode layer of setting, wherein
The anode layer of one blue subpixels is electrically connected with the cathode layer of another blue subpixels.
7. electroluminescence display panel according to claim 1, which is characterized in that the length side of a blue subpixels
It is arranged to along the second direction, the length direction of another blue subpixels is arranged along the first direction.
8. electroluminescence display panel according to claim 1, which is characterized in that the electroluminescence display panel is
OLED display panel or QLED display panel.
9. a kind of electroluminescence display panel, which is characterized in that the electroluminescence display panel includes multiple pixel units, often
One pixel unit includes multiple primary color sub-pixels, wherein the primary color sub-pixels of each pixel unit include at least
Two same sub-pixels, described at least two are one another in series between sub-pixels, and under identical driving current, described homochromy
The luminescent lifetime of sub-pixel is less than the luminescent lifetime of the primary color sub-pixels of remaining color；
In each described pixel unit, described at least two with sub-pixels be blue subpixels, and described at least two is blue
The primary color sub-pixels of the blue subpixels and remaining color in sub-pixels are arranged along first direction interval, and another institute
At least one of blue subpixels and the primary color sub-pixels of remaining color are stated along the second direction perpendicular to the first direction
Interval setting.
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| CN111009195A (en) * | 2019-12-23 | 2020-04-14 | Oppo广东移动通信有限公司 | Display structure, display screen assembly and electronic equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108389550B (en) * | 2018-01-31 | 2020-04-03 | 上海天马有机发光显示技术有限公司 | Driving method of display screen and organic light emitting display device |
| CN108712526A (en) * | 2018-04-28 | 2018-10-26 | 维沃移动通信有限公司 | A kind of screen and mobile terminal |
| CN109192753B (en) * | 2018-07-27 | 2021-03-02 | Tcl华星光电技术有限公司 | OLED display panel and preparation method thereof |
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